Improvement in coal-stoves



Patenxed'Aug. I7, 1869.

ifinitrd fittin JACOB S. PLATT, PHILADELPHIA, PENNSYLVANIA.

. Letters Patent No. 93,7 42, dated August 17, 1869.

IMPROVEMENT IN COAL-STOVES.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern Be'it known that I, JACOB S. PLATT, of Philadelphia, Pennsylvania, have invented a new and useful Improvement in Stoves, Heaters, Ranges, and Furnaces and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification, in which- Figure 1 is a vertical cross-section of my improvement applied to a stove, through the line x y of fig. 2.

Figure 2 is a perspective view of my improvement, showing the fire-clay cylinder in section.

d Figure 3, a perspective view of the fire-clay cyliner.

Figure 4, a perspective view of the ash-deposit draw. V p

In the drawings- A, fig. 1, is the door forinserting the coal into the fire-chamber.

B is the tire-clay cylinder, which not only answers the usual purpose of a fire-clay cylinder, but also, by

- its bulge or projection, serves to partially support the live c0als,"thus preventing the rapid burning out of the grate O, which, instead of wholly supporting the burning coal, as heretofore, as well as sifting the ashes, merely separates the ashes from the coal, and has very little weight upon it.

D is the clearing-door, cut throughthe tire-clay cylinder and side of the stove, through which the ciuders are dragged by a poker, and fall, through opening E, into section F of the receiving-draw F, while the ashes fall, through the grate G, into section F, of the receiving-draw, from which section F the ashes may be emptied, while the nnburnt ashes in F may be returned to the fire, through door A.

In order that the cinders may be easily scraped from the grate 0, through the door D, it is necessary that the bottom of said door D should be on a line, or nearly so, with the top of grate O. (The bulge of the fireclay cylinder B, relieving the grate and the burning fuel below said bulge of any heavy pressure, admits of the more easy removal of the cinders through door D.) Or, if preferred, the cinders may be scraped on to a shovel, through door D. and returned at once to the fire, through door A, instead of falling through Instead of the bulge or projection in the fire-clay cylinder B, a throttlcd' or contracted passage may be secured in various other ways, such as securing a single ring, of iron or other suitable material, to the inside ot the cylinder 15; or a ring or table, of iron or other suitable material, with legs resting on the edge of the grate; or a cylinder or collar, with its bottom resting on the grate. Any of these devices, or their-"5 equivalents, for forming a throttled or contracted passage, for the fuelto arch itself, or be'supported upon,

may be used; and, by said bulge or contraction, the draught is greatly increased.

Having thus described my improvement,

\Vhat I claim as new, and desire to secure by Letters Patent, is

1. The fire-clay'cylinder B, having a bulge or 'project-ion, for partially supporting the burning fuel, substantially as and for the purposes described.

. 2. The clearing-door D, above the tire-grate, having its bottom on a line, or nearly on a-line, with the top of said grate, substantially as described.

3. The receiving-draw F, with two sections, for receiviug the cinder-s and ashes, respectively, substantially as described.

4. The combination of a stove or furnace-cylinder, a throttled or contracted passage, a grate below said throttled passage, and an opening on alevel or above the grate. 1 JACOB S. PLAT'I.

Witnesses:

Geo. E. BUcKLEr, W. A. A. MGKINLEY. 

